In todayâ€™s world business environment satisfying a customer is the ultimate goal and objective ofrnall businesses. Customer satisfaction is a fundamental marketing construct especially for servicernproducing companies and they have adopted it as a high priority operational goal.rnThe main purpose of this study was to assess service quality and examine the impact ofrnSERVPERF dimensions on the customer satisfaction at Wegagen Bank. The researcher employedrnquestionnaire survey approach to see the attitude of the customers of Wegagen Bank and in thisrncase SERVPERF instruments originally proposed by Gronroos (1990) and more developed byrnCronin and Taylor (1992) applied the dimensions in designing questionnaire. In depth Interviewrnwas employed to collect data from the organization marketing manager. The researcher took 250rnsample respondents from five branches; the sampling method applied was convenience andrnpurposive sampling. The data analysis was conducted through statistical techniques such asrndescriptive statistics, Bivariate correlations and multiple linear regressions by using SPSS andrnMicrosoft Excel.rnThe finding indicates that the service quality of the organization is good based on the result ofrnthose dimensions. From this, the highest perceived service quality is observed in responsivenessrnand assurance. The regression result shows empathy has highest impact on customerrnsatisfactions followed by assurance and responsiveness. From the data collected and result ofrnthe analysis, the study indicate that the five dimensions of service quality are positivelyrncorrelated with the bank customer satisfaction, For this, the bank is advised to give strongrnemphasis to all the service quality dimension in maintaining and improving the service qualityrnthe bank provides